<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>媒体查询</title>
</head>
<style>
    @media screen and (min-width: 960px) {
        body {
            background-color: red
        }
    }
    @media screen and (max-width: 960px) {
        body {
            background-color: #FF6699
        }
    }

    @media screen and (max-width: 768px) {
        body {
            background-color: #00FF66;
        }
    }

    @media screen and (max-width: 550px) {
        body {
            background-color: #6633FF;
        }
    }

    @media screen and (max-width: 320px) {
        body {
            background-color: #FFFF00;
        }
    }
</style>

<body>

</body>

</html>